Kengo Ijima

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Multicast accounting control system and broadband access server
- Patent number 7,848,342
- Issue date Dec 7, 2010
- Hitachi, Ltd.
- Masanori Kamata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multicast packet relay device adapted for virtual router
- Patent number 7,751,394
- Issue date Jul 6, 2010
- Hitachi Communication Technologies, Ltd.
- Masatoshi Takihiro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Packet forwarding apparatus and access network system
- Patent number 7,477,648
- Issue date Jan 13, 2009
- Hitachi Communication Technologies, Ltd.
- Migaku Ota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multicast accounting control system and broadband access server
- Patent number 7,474,669
- Issue date Jan 6, 2009
- Hitachi Communication Technologies, Ltd.
- Masanori Kamata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
MULTICAST ACCOUNTING CONTROL SYSTEM AND BROADBAND ACCESS SERVER
- Publication number 20090080427
- Publication date Mar 26, 2009
- Masanori Kamata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PPP GATEWAY APPARATUS FOR CONNECTING PPP CLIENTS TO L2SW
- Publication number 20070195804
- Publication date Aug 23, 2007
- Kengo Ijima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Multicast accounting control system and broadband access server
- Publication number 20060109795
- Publication date May 25, 2006
- Masanori Kamata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Packet forwarding apparatus and access network system
- Publication number 20060062228
- Publication date Mar 23, 2006
- Migaku Ota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Multicast packet relay device adapted for virtual router
- Publication number 20060002391
- Publication date Jan 5, 2006
- Hitachi Communication Technologies, Ltd.
- Masatoshi Takihiro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE